Gene tracks down a group of crooks who are using a stolen disintegrator gun to rob banks. The chase involves a missing government scientist.; Roy tracks a pair of bank robbers who steal an autogiro to use in their getaway.; An outlaw poses as a doctor and tries to quarantine a town by telling them that a man has an extremely contagious disease.; Uncle Mike tells how Trigger and Bullet were made honorary members of the Boys' Club as a reward for finding a lost boy.; Johnny helps a friend, who is a circus owner, investigate a series of accidents at the winter quarters.; Bill chases two men who robbed Pop's Cafe and saves them from a flash flood.; A glossary of Indian terms, each accompanied by a pronounciaton guide and a picture.; A brief explanation of how indians cooked acorns, rabbit and buffalo.; Ricky goes fishing and encounters a gang of horse rustlers.